Using Windows 7 machine. I already have two lcd monitors both with DVI connector and I have my computer setup with dual monitors using an NVIDIA Quadro NVS 290 card that has a DMS-59 connector and it works with an adapter cable.

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1 Answer
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From ComputerLovers' article on using dual monitor graphics cards, they RECOMMEND Radeon HD 5830 as a great card for dual monitor support. Based on this article and the fact that most modern cards support dual monitors, I think it can safely be assumed that you will be able to use Dual monitors.

You can use the DVI port, then get an HDMI to DVI adapter.
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Simon SheehanJul 18 '11 at 2:50

Is there a particular HDMI to DVI adapter that I need? I just have a regular LCD monitor with DVI input. There are so many variations of ports now VGA, HDMI, DVI (multiple versions), and DisplayPort that it's a little confusing. I tried connecting my second monitor using a DisplayPort to DVI adapter but it's not working.
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UserJul 20 '11 at 7:08